346428628 has 48 divisors (see below), whose sum is σ = 761420800. Its totient is φ = 137041632.

The previous prime is 346428623. The next prime is 346428647. The reversal of 346428628 is 826824643.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346428623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8125 + ... + 27547.

Almost surely, 2^346428628 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 346428628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (380710400).

346428628 is an abundant number, since it is smaller than the sum of its proper divisors (414992172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

346428628 is a wasteful number, since it uses less digits than its factorization.

346428628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19461 (or 19445 counting only the distinct ones).

The product of its digits is 442368, while the sum is 43.

The square root of 346428628 is about 18612.5932637019. The cubic root of 346428628 is about 702.3246713157.

The spelling of 346428628 in words is "three hundred forty-six million, four hundred twenty-eight thousand, six hundred twenty-eight".